94.01: Starting from rest, object 1 falls freely for 4.0 seconde1kepl g50vj 3,gowp 9s, and object 2 falls freely for 8.0 seconds. Compared to object 1, ,o39v gp0ekpw l15e jgobject 2 falls:

  94.02: A car starts from rest and unmv +3 -pu .kycxd5fzup70c4rw iformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s yzx+-ku d 5wppur.cmf0c47v3. How far does the car travel during this time?

  94.03: A ball is thrown off-8m ptd8tq.za5y d)7d p6yked a high cliff with no horizontal velocity. It lands 6.0 s later with a velocd7dtm8kpyy dz) a5- d.peq6 t8ity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surfacl,*oa,x3qr 0 wzwmvq064f rk qe of the earth is accelerating vertically upward alm 60q q0 qwo,4*rzxr fw3kav,t $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling bor (f45g-kd k6rgm*ttp/t7 uwwdy is found to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving wi urkrpft/6gmtt* (dw kw75g4 -th a downward velocity closest to:

  95.39: A car starts from rest and acc*i+/irppv4w w o;rrj1elerates at $0.80\;m/s^2$ for 10 s. It then continues at constant velocity. Twenty seconds (20 s) after it began to move, the car has:

  96.17: A ball which is dr1taw m p,+onqlvmd(g -ot/) x-opped from the top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the building ismtaq ,+(wpvlnt-1omg-/ )dxo approximately:

  97.09: At a certain time, an object in free fall has velocity 4.vofiev /d3wv1aoq:2ql/ p4 +o0 m/s in the upward direction. What/olv 4+pqe /23i1ao:ovvfq dw is the approximate velocity of the object one second later?

  98.14: How long mustb2ne . s3gv7d3g kvck* a $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object is found to be moving downward at 18 m/s. If(b a *t+splhr+ it continues to fall, two seconds later the object would be mop+trb+ *hsa (lving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 s until ren py.on s0*ys*aching the ground. What was t.*so0 n*ypnsy he height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launche*sb* xxjwu2zhq*8 ja) d straight upward so that it rises to a maximum height of 12.0 m above the launch point.swz*xbj*82)xh aj uq * Ignore air resistance. When the ball reaches its maximum height, which one of the following choices best represents the magnitude of the net force acting on the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched straight upward so xzu9k7s38,pa m hbzs3 that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately howp3 h, zkazsb38u 79xsm much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plaerg qwkz6*1r * ug/k)zb7opo(ne has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does itq(goz *1g r7/wkrb )zeo*puk6 travel in three seconds?

  98.40: Coin I is thr7giqxfoz p4,3 own upward from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the xq3gifz4,o p7 top of the tower 2.0 s later. Assume g is $10 \; m/s^2$. How far below the top of the tower does coin I pass coin II?

  02.04: If a ball is thrown direct-54 d csvd:neko+ vba)ly upwards with twice the initial speed of another, how much higher will it be at its ap ): av4ecb+5ddvon-k sex?

  02.30: A box falls to the ground from a deliveryob hhk4+5pyt ;,aw zd8 truck traveling at 30 m/s. After hitting the road, it slides 45 metersdhz 5pb,4 ;koa8h w+ty to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s near the surfl:7oe;guxr3wb-k; 9hqb, ew tace of the earth. After two seconds what would be the direction of the displacement, velohowg q97:brbe ke x3l,; t-u;wcity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown 6 bem r,e zx90 h+:d+hwd1bhdqvertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from high to low the maximum height of each stone. Assume air resistance i0z+:x ehdhb+w9hr1mq 6bd, des negligible.

  10.25: Two point objects are launchebi+f*7jfg ; god straight upward with identical linear momentum.+ffi7 b*ggj;o Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has mass 2M, what is its maximum attained height above the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After each bounce,fab,xpnv)psd* 1(k+ ,hyq ( jz7dinq- the ball reaches one-half the height of the bounce before it. If the time the ball was in the air between the first and second bounce was 1 second, what would be the time between the second and third b qi nvk ,f(,ps1d()bz -a7j+p ndxhqy*ounce?

  16.21: At 1.94 s after launch,+.*mquswhc vg f:7qm4 a projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?w.g mu cs:qm*v7fhq+4

  05.02: A pebble is dropped from a high e,j u+u,fd qodn2/p1ivertical cliff. The collision of the pebble with the ground below is seen 1.50 seconds aftj,2uf u+i 1,nqpdd/oe er the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height otb1ocssa:(i *9 wn4au f a parking garage. One student caia9t1ws :u*o bn4(ssuggested that to determine the height of the garage, they simply had to drop tennis balls from the top and time the fall of the tennis balls. If the time for the ball to fall was 1.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is moving along a strics,7k*pyc) (w rr-*wawj ub4aight line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initial velocity andbww c(,*)piak*-y wr7c4jrus acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (down the pl(cpr ken1ca(xb73gum 4+)tvk ane of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank these three paths from shortest to longest in terms of the amount of time (T) necessary for the object to be released from rest at (uc7k31pmx vtr4(ngkc+ )b ae point A and travel to point B. Assume that in changing direction that there is no loss of energy and that it takes negligible time.

  06.13: A rock is dropped from the top of a tall (egg.3 wic: oeart 39pqn) re:kq6*fq tower. Half a second later another rock, twice as massive as the first, is dropped. Ignoring air)eq(c3 :f.n9r6:*kpwg 3i ee gq troqa resistance,

  06.18: A cart is initially moving at 0.5 m/j2v) lyh ,c.fqzxyb3 7d;)dp as along a track. The cart comes to rest after traveling 1 m. The experiment is re y, 3hdza)b;v.l27 q)pd ycjxfpeated on the same track, but now the cart is initially moving at 1 m/s. How far does the cart travel before coming to rest?

  07.11: A cart is initially moving at 0.5 m/s gqgeo woa-k ha1x::i-dr/;/ walong a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initially moving at 1 m/s. How far does the :qwxdk- h: g//ogei w1ar-;oacart travel before coming to rest?

  08.03: A dog starts from rest and runs in a straight line with a constany/1/9v v +n gujd.amryt acceleration of 2/v+gu.9 /njyv1 rymda$.5\;m/s^2$. How much time does it take for the dog to run a distance of $10\;m$?

  10.29: A ball initially at rest falls without air resistance from a height h abo20: a ujp8ilbu:zyj/ ove the ground. If the ball falls the first distance 0.5h in a time t, how much t8 u2 /li:oj0azbuyj p:ime is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformlyp fj,nq-4i)im+q wj+6s ds7 mn accelerate to the right. At time t=0,the objects are at the same initial position. Object 1 has initial speed twice that of Object 2; Object 1 has one-half the acceleration of Object 2. After some time T, the velocity of th sndqnj7wsf)mii+ q-,p +j4m6e two objects is the same. What is the ratio of the distance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thmfd)w* k)hkd(c ihbo8g+ 5q5 orown horizontally with speed 10.0 m/s from a height H above the ground. The object reaches the ground with a speed of 20.0 m/s. Which one of the following choices best represents o g) o*f ib8hhq5(d)mkdc+ wk5the time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is throrr3wh b:pczk(hr t;hu5.u( 3tew pk- 6wn straight upward. The object remains in free fall until it returns to its initial launchr3e;r (chw: k 6hp3 zbu 5rtwk(-ptuh. point. Which one of the following graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is 8jogxxbr;m,a7 r),jj dropped into free fall. Through how many meters does the object fall during the first 3.00 second;78m,a j rrjx,o) jbxgs of flight?

  15.02: A box uniformlyxm ) :9ss;c*c1 kvrs;mz hwui6 slides 7.50 m to rest across a flat surface in a time of mvrk;*xc smh9cs uw)61 ;i:sz12.0 s. What was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a s /gma;:(sejvr eq7/z0k/h vmvpeed of 7.60 m/s in a time of 3.00 s. Through what;a /v0meh:vr /qz g (vem/skj7 distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/suuzrha, 9sr9 5. Five seconds later, the car is moving at 40.0 cm/s to the left. The total displacement of the car during this time is 10.0 cm to the left of where it started. Which one of the following choices best represents the magnitude of the average velocity of the car during thes ,5a rz9ruuh9 five second motion?

  14.17: A toy car initi h43tn1 q 6yy4bgxq.laua7/ yy1p/zb xally moves to the right at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The total displacement of the car during this time is 10.0 cm to the left of where it started. Which one of the following choices best represents the magnitude of the average accel q13tbxzhxay4b.y/l/p ua y6ny714g q eration of the car during the five second motion?

  14.33: An object moves with constant acceleration startin; xago1*gm.kq dhbs 3s6o2bq .g with velocity $v_0 = 5.00\;m/s$ and ending with a velocity of $v = -1.00\;m/s$ in a time of 3.00 s. For this motion, what is the average speed associated with the object?

  15.05: An object initially is moving upward while in free2 byw2d)ns. sp fall. Which one of the followingdp w2ny).2ssb choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object movbgm7 aja qt801lc v.6bing only to the right completes a 20.0 second trip in two stages, I and II. The average speed of the entire trip is 10.0 m/s. For stage I, the object moves with a constant velocity of 6.0 m/s for 12.0 seconds. What constant acceleration must the object have durin680 t.a bc7lb1qgjm vag the 8.0 seconds of stage II?

  15.32: An object moving along a l(cd:6wd-*nkabnc 4 c1 53uefjk2r s e4jpeh4 mine completes a 20.0 second trip with an average speed of 10.0 m/s in two stages. Durin2fn ekcsp4-j b(6dej ruecn35amkh *:41w 4dcg stage 1, the object moves with a constant velocity of 6.0 m/s to the right for 12.0 seconds. What constant magnitude acceleration directed to the left must the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a z icp5 6*7p ongehp ;br7yq3l/high cliff, a small rock is dropped from rest. A ball is launched straight downwar *qgp5 /npz7bicl h3o y7rp;6ed with an initial speed of 36 m/s at a time 2.10 s after the rock was dropped. When the ball has fallen 28.0 m further than the initially dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight road,ry a5,9 (d5rmqgfdq) h a self-driving car races with a robot. The robot accelerm)hq, 5 (dyqa5df9rrg ates at $8.50\;m/s^2$ until reaching its maximum constant speed of 15.0 m/s. The car accelerates at $5.60\;m/s^2$ until reaching its maximum constant speed of 25.0 m/s. The car and robot start from rest from the same location. What is the maximum distance that the robot leads the car during the race?

  17.44: A ball is launched vertically u 9t)r77dwjohal -54 hfvwcz 9zpward. The vertical position of the ball 0.70 s after release is the same as its vertical position 4.10 s after its release. At what time is the object first at a vertical position that isjhwcw tolz 94v97) af7-zhd 5r one-half of the maximum height it obtains during its flight?